2 papers
math.CO2026
Spread Methods for Induced Cycles
Lanchao Wang, Xiaolin Wang
We develop a spread-based approach to finding induced cycles and apply it to two problems. First, we resolve the odd-hole gadget conjecture of Bradač, Draganić and Sudakov by const…
math.CO2026
The Multicolour Size--Ramsey Number of an Even Cycle
Lanchao Wang, Xiaolin Wang
We determine the -colour size--Ramsey number of even cycles up to absolute constant factors. For every and every even , \[ \widehat R_k(C_n)=Θ(k^2\log k)n…